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Question about boiler size

I know there are many other factors, but I'm wondering if 80K BTU boiler is sufficient to heat about 65 Ft of baseboard? I'm in the Northeast (1400sf reasonably insulated home) I figure 66-70 degrees for indoor wintertime temp. I can go up to 105KBTU, but I don't want to oversize if its not necessary.

I'm sure there's lots more information that's needed to make a specific recommendation, but I'm just curious if 80K is theoretically big enough.